We focus on a class of NRMIs that are obtained by normalising the increments of a generalised gamma process [1]} proposed in [2]}, which enjoy analytical tractability and include
many well-known priors as special cases.
Generalised gamma processes are discrete random measures \(\tilde{\rho }\)  of the form
\(\tilde{\rho }= \sum _{i=1}^\infty J_i\delta _{\theta _i},\) 
